Hospital sterilization service moved from polycarbonate trays to PPSU after 6-month brittleness test.
Polycarbonate trays in hospital sterile processing departments typically crack after 200 – 400 autoclave cycles. Replacement cost is significant, and a cracked tray dropped during transport can scatter sterile instruments — a compliance event.
PPSU (PolyPhenylSulfone) survives 1000+ autoclave cycles at 134 °C / 18 min without crazing or significant strength loss. Cost is ~3 – 4× polycarbonate but lifecycle cost drops ~60 % when factoring in replacement frequency.
PPSU machines easily — slow speeds, sharp tools, no coolant required. Drilled holes for instrument retention pins are typical. Edge polishing improves cycle life by removing notch initiation sites.
260°C continuous service, autoclave-stable, FDA grade — for medical sterilization trays and high-temp baby bottles.
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PolyEtherEtherKetone semi-finished — black or natural, 100% virgin material for medical and industrial CNC machining.
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